> Sorry, I don't know if it is appropriate to ask such question here. > > (((*((__u32 *)&((__sk)->dport)))== (__ports)) > > In above code, what is difference if I replace ( * ( (__u32 *) > &((__sk)->dport) ) ) refer a __u32 (sizeof(__u32) bytes) starting from address &__sk->dport > with ((__u32)(__sk->dport)) read __sk->dport (sizeof __sk->dport bytes starting from address &__sk->dport) and convert the value read to a __u32 value. If sizeof (__u32) is 4 and sizeof __sk->dport is 2 and 4 bytes starting from &__sk->dport are 0x01 0x01 0x01 0x01 then then value of ( * ( (__u32 *) &((__sk)->dport) ) ) is 0x01010101 while the value of ((__u32)(__sk->dport)) is 0x00000101 Sourav > > Thanks. > > Haiguang > > - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
